SIMO · Silicon Motion Technology CORP · Insider Trading

$265.25 -12.45 (-4.48%) At close · Sep 10

Market Cap

$9.42B

33.91M

Trades by corporate insiders — officers, directors and holders of more than 10% of the shares — disclosed to the SEC on Forms 4 and 5. Form 3 supplies initial ownership rather than a trade; Form 4 must be filed within two business days of the trade.

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Insider Sentiment Score

Peer-relative 0–100 rank of how aggressively insiders accumulated over the trailing 90 days. See the full ranking.

Net buyers

-2

Net shares bought

-0.01%

Net buy value

-$1,258,320

Date	Insider	Role	Type	Security	Shares	Price	Value	After
2026-06-18	LIN KUAN-MING	Director	Sell↓ Filing footnotes — American depositary shares (Direct) Each American depositary share ("ADS") represents four ordinary shares, US$0.01 par value per share, of Silicon Motion Technology Corp. (the "Issuer").	American depositary shares	1,000	$320.31	$320,310	7,500
2026-06-18	SHIEH HAN-PING	Director	Sell↓ Filing footnotes — American depositary shares (Direct) Each American depositary share represents four ordinary shares, US$0.01 par value per share, of Silicon Motion Technology Corp.	American depositary shares	1,000	$328.00	$328,000	6,655
2026-06-17	LIN KUAN-MING	Director	Sell↓ Filing footnotes — American depositary shares (Direct) Each American depositary share ("ADS") represents four ordinary shares, US$0.01 par value per share, of Silicon Motion Technology Corp. (the "Issuer").	American depositary shares	1,000	$300.00	$300,000	9,500
2026-06-17	LIN KUAN-MING	Director	Sell↓ Filing footnotes — American depositary shares (Direct) Each American depositary share ("ADS") represents four ordinary shares, US$0.01 par value per share, of Silicon Motion Technology Corp. (the "Issuer"). The price reported in Column 4 is a weighted average price per ADS. These ADSs were sold in multiple transactions at prices ranging from $310.00 to $310.09 per ADS, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of ADSs sold at each separate price within the ranges set forth in this footnote.	American depositary shares	1,000	$310.01	$310,010	8,500
2026-06-02	SHIEH HAN-PING	Director	Sell↓ Filing footnotes — American depositary shares (Direct) Each American depositary share represents four ordinary shares, US$0.01 par value per share, of Silicon Motion Technology Corp.	American depositary shares	1,000	$301.25	$301,250	7,655
2026-05-06	DUANN SHII TYNG	Director	Sell↓ Filing footnotes — American depositary shares (Direct) Each American depositary share represents four ordinary shares, US$0.01 par value per share, of Silicon Motion Technology Corp.	American depositary shares	1,500	$245.00	$367,500	15,200

Legend Buy — open-market purchase Sell — open-market sale ↑ Shares acquired ↓ Shares disposed (gift, conversion, tax…)

Showing 1–6 of 6 transactions

Key facts CIK 1329394 CUSIP 82706C108 13F (30d) 194 filings 193 filers Visit website Investor relations